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Finding the Fourth Proportional to 552,341.16, 762,434.18 and 485,074.60

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Solution

The fourth proportional to 552,341.16, 762,434.18 and 485,074.60 is: 669,581.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,341.16 : 762,434.18 = 485,074.60 : x
  2. Step 2: Convert to fraction form
    552,341.16/762,434.18 = 485,074.60/x
  3. Step 3: Cross multiply
    552,341.16x = 762,434.18 × 485,074.60
  4. Step 4: Simplify right side
    552,341.16x = 369,837,454,889.83
  5. Step 5: Solve for x
    x = 369,837,454,889.83/552,341.16
  6. Step 6: Final answer
    x = 669,581.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.